Main Question or Discussion Point
I am attempting to model a multi-mode symmetrical slab waveguide using Fortran 90. I am able to produce plots of each optical mode and am then summing them but I am more or less convinced that the relative intensity of the modes is incorrect. I am fairly sure that the error is arising because I am mis-using the amplitude constants which describe the electric field inside and out of the waveguide. Anybody with any experience oin this who could offer me assistance please let me know and I can get you a copy of the code for your attention.